/**
 * A class to help with parsing standard config files
 *
 * Copyright (C) 2021 Aaron Ball <nullspoon@oper.io>
 *
 * Noteless is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Noteless is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with noteless.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "config.h"

void config_init(struct config *c) {
  c->extension[0] = 0;
  c->editor[0]    = 0;
  c->notepath[0]  = 0;
}

int config_read(struct config* c, char* path) {
  char linebuf[1024] = {0};
  char keybuf[1024] = {0};
  FILE* fd;

  fd = fopen(path, "r");
  if(!fd)
    return -2;

  while(fgets(linebuf, 1024, fd) != NULL) {
    if(linebuf[0] == '#')
      continue;

    if(config_linekey(linebuf, keybuf) == 1) {
      if(strcmp(keybuf, "extension") == 0) {
        strcpy(c->extension, config_lineval(linebuf));
      } else if(strcmp(keybuf, "path") == 0) {
        strcpy(c->notepath, config_lineval(linebuf));
      } else if(strcmp(keybuf, "editor") == 0) {
        strcpy(c->editor, config_lineval(linebuf));
      }
    }
  } 
  return 1;
}

int config_linekey(char* line, char* outbuf) {
  char* keyend = strchr(line, ' ');
  if(!keyend)
    return -1;
  strncpy(outbuf, line, keyend - line);
  outbuf[keyend - line] = '\0';
  return 1;
}

char* config_lineval(char* line) {
  char* start = strstr(line, " ");

  while(start[0] == ' ') {
    start++;
  }
  // If we hit the end of the line, no value was specified
  if(start[0] == '\0' || start[0] == '\n')
    return NULL;
  return trim(start);
}